SelectWithUnionQuery (children 3)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    WithElement (children 1)
     Subquery (children 1)
      SelectWithUnionQuery (children 1)
       ExpressionList (children 2)
        SelectQuery (children 1)
         ExpressionList (children 1)
          Literal UInt64_1 (alias n)
        SelectQuery (children 2)
         ExpressionList (children 1)
          Function count (children 1)
           ExpressionList (children 1)
            Asterisk
         TablesInSelectQuery (children 1)
          TablesInSelectQueryElement (children 1)
           TableExpression (children 1)
            TableIdentifier x
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier x
 Identifier NULL
 Set
